Target is grabbed by a companion on a moving horse.
Target mounts a horse and the horse moves away.
Force movement, albeit being thrown, is not cause for opportunity attack.
If your in the range of a hostile enemy and you move with out disengagement you will provoke OA.
so regardless of the scenario, getting on a horse, jumping away (into a moving vehicle) etc, you are getting OA on you. If you are movement is caused not using your own movement, no OA.
Just to add an interesting change between the 2014 and 2024 editions. The 2014 line "In either case, if the mount provokes an opportunity attack while you're on it, the attacker can target you or the mount" found in Controlling a Mount is not in the 2024 Mounted Combat rules.
So now, with the 2024 rules, when the mount provokes an OA, the potential target is always the mount, which makes sense.
Examples:
Do these allow Opportunity Attacks?
Target allows themselves to be thrown.
Target jumps onto a moving train.
Target is grabbed by a companion on a moving horse.
Target mounts a horse and the horse moves away.
"Sooner or later, your Players are going to smash your railroad into a sandbox."
-Vedexent
"real life is a super high CR."
-OboeLauren
"............anybody got any potatoes? We could drop a potato in each hole an' see which ones get viciously mauled by horrible monsters?"
-Ilyara Thundertale
Force movement, albeit being thrown, is not cause for opportunity attack.
If your in the range of a hostile enemy and you move with out disengagement you will provoke OA.
so regardless of the scenario, getting on a horse, jumping away (into a moving vehicle) etc, you are getting OA on you. If you are movement is caused not using your own movement, no OA.
You provoke an opportunity attack when you move using your movement, action, bonus action, or reaction.
Given that, jumping onto a train does provoke an opportunity attack, but being picked up and thrown (or put on a horse) by someone else does not.
If you ride away from an enemy on a horse, you're using the horse's movement; you don't provoke an opportunity attack, but the horse does.
pronouns: he/she/they
Just to add an interesting change between the 2014 and 2024 editions. The 2014 line "In either case, if the mount provokes an opportunity attack while you're on it, the attacker can target you or the mount" found in Controlling a Mount is not in the 2024 Mounted Combat rules.
So now, with the 2024 rules, when the mount provokes an OA, the potential target is always the mount, which makes sense.
A little bit of wierdness but ok =)
"Sooner or later, your Players are going to smash your railroad into a sandbox."
-Vedexent
"real life is a super high CR."
-OboeLauren
"............anybody got any potatoes? We could drop a potato in each hole an' see which ones get viciously mauled by horrible monsters?"
-Ilyara Thundertale